We are doing the beekeeping, but dense will the 30Kg position when it comes to the full to the next box. We're using the loading and unloading of the relay box at the time of inspection work. Cheap and uses affordable and very convenient. It was released from hard labor.

Wire was shank in less than a week to buy
There is a use on the problem and shank everywhere in the wire at the time, but then are also using a lapse of one month
We can not have confidence in the product in such a state in the raising and lowering of about 100 times a day.